Why do most space telescopes (i.e. the Hubble) use reaction wheels instead of control moment gyros? - Quora
![PoC: Constrained Satellite Reorientation with Control Moment Gyroscope | Marco M. Nicotra | University of Colorado Boulder PoC: Constrained Satellite Reorientation with Control Moment Gyroscope | Marco M. Nicotra | University of Colorado Boulder](https://www.colorado.edu/faculty/nicotra/sites/default/files/styles/medium/public/article-image/fig_vscmg_frame.png?itok=7O1qngp5)
PoC: Constrained Satellite Reorientation with Control Moment Gyroscope | Marco M. Nicotra | University of Colorado Boulder
![Comparison of Control Moment Gyros and Reaction Wheels for Small Earth-Observing Satellites | Semantic Scholar Comparison of Control Moment Gyros and Reaction Wheels for Small Earth-Observing Satellites | Semantic Scholar](https://d3i71xaburhd42.cloudfront.net/5330c2333672edd03d34bdbd1e1e678f2a175319/3-Figure4-1.png)
Comparison of Control Moment Gyros and Reaction Wheels for Small Earth-Observing Satellites | Semantic Scholar
What is difference between reaction wheel and momentum wheel used in satellites? What are their functions/role? - Quora
![BG Rotors make better reaction wheels than reaction wheels. - KSP1 Discussion - Kerbal Space Program Forums BG Rotors make better reaction wheels than reaction wheels. - KSP1 Discussion - Kerbal Space Program Forums](http://u.cubeupload.com/Geonovast/a32screenshot2.png)
BG Rotors make better reaction wheels than reaction wheels. - KSP1 Discussion - Kerbal Space Program Forums
![Comparison of Control Moment Gyros and Reaction Wheels for Small Earth-Observing Satellites | Semantic Scholar Comparison of Control Moment Gyros and Reaction Wheels for Small Earth-Observing Satellites | Semantic Scholar](https://d3i71xaburhd42.cloudfront.net/5330c2333672edd03d34bdbd1e1e678f2a175319/2-Figure2-1.png)